Which of the following are characteristics of a sporophyte of Bryophytes ?
I. Multicellular sporophyte.
II. Completely or partially dependent on the gametophyte.
III. Undergoes a reduction division to from spores.

Options

A. II and III
B. III and I
C. Only I
D. All of these

Answer

To determine the characteristics of a sporophyte of Bryophytes, let's analyze each statement provided in the question:

1. **Multicellular sporophyte**:
- The sporophyte of Bryophytes is indeed multicellular. It develops from the fertilized egg (zygote) and grows into a structure that is typically attached to and dependent on the gametophyte for nutrition.

2. **Completely or partially dependent on the gametophyte**:
- This statement is true. The sporophyte is not independent; it relies on the gametophyte for its nutritional needs. It is often considered parasitic to the gametophyte.

3. **Undergoes a reduction division to form spores**:
- This statement is also correct. The sporophyte undergoes meiosis (reduction division) to produce haploid spores, which can then develop into new gametophytes.

Now, let's summarize the analysis:

- All three statements about the sporophyte of Bryophytes are correct. Therefore, the answer to the question is: **All of these**.

### Step-by-Step Solution:
1. Identify the characteristics of the sporophyte in Bryophytes.
2. Analyze each statement:
- Confirm that the sporophyte is multicellular.
- Confirm that it is dependent on the gametophyte.
- Confirm that it undergoes reduction division to form spores.
3. Conclude that all statements are true.
4. Select the answer: **All of these**.